In what situations in port (or at a port anchorage) might SOLAS regulation XI-2/8.1 on master’s discretion for ship safety and security apply?

Where, for example, a master considers it prudent, against the advice of the Company Security Officer, for example: (1) to switch off AIS at a particular anchorage; (2) to search personnel, or their baggage, or to deny their access to the ship; (3) to refuse to load a certain container or item of cargo until it has been searched.